Have you ever wondered how AWS Lambda invokes your custom Node.js function, purely in the context of JavaScript? Me neither, but after looking at the all possible ways you can define your function it sparked my interest to find out.

So in Lambda, let’s have our function defined as

exports.myHandler = function(event, context) {
  console.log("Event: " + JSON.stringify(event))
  return 'this is the result';
}

File: myIndex.js

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